2-{4-[(2,4-diamino-pteridin-6-ylmethyl)-methyl-amino]-benzoylamino}-4-{2-[3,4,5-triacetoxy-6-(4,5,6-triacetoxy-2-acetoxymethyl-tetrahydro-pyran-3-yloxy)-tetrahydro-pyran-2-ylmethylsulfanyl]-ethylcarbamoyl}-butyric acid methyl ester 在
吡啶 、
氢氟酸 作用下,
反应 2.0h,
以52%的产率得到2-{4-[(2,4-diamino-pteridin-6-ylmethyl)-methyl-amino]-benzoylamino}-4-{2-[3,4,5-triacetoxy-6-(4,5-diacetoxy-2-acetoxymethyl-6-fluoro-tetrahydro-pyran-3-yloxy)-tetrahydro-pyran-2-ylmethylsulfanyl]-ethylcarbamoyl}-butyric acid methyl ester